521424504030 has 128 divisors (see below), whose sum is σ = 1338311310336. Its totient is φ = 129695667200.

The previous prime is 521424504023. The next prime is 521424504037. The reversal of 521424504030 is 30405424125.

It is an interprime number because it is at equal distance from previous prime (521424504023) and next prime (521424504037).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (521424504037) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 101303917 + ... + 101309063.

It is an arithmetic number, because the mean of its divisors is an integer number (10455557112).

Almost surely, 2^521424504030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 521424504030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (669155655168).

521424504030 is an abundant number, since it is smaller than the sum of its proper divisors (816886806306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

521424504030 is a wasteful number, since it uses less digits than its factorization.

521424504030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8802.

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 521424504030 its reverse (30405424125), we get a palindrome (551829928155).

The spelling of 521424504030 in words is "five hundred twenty-one billion, four hundred twenty-four million, five hundred four thousand, thirty".